Access radiodays.jp. 「声」と「語り」のダウンロードサイト

name

value

score

weighting

FCP (First Contentful Paint)

Value4.6 s

14/100

10%

LCP (Largest Contentful Paint)

Value7.2 s

5/100

25%

SI (Speed Index)

Value16.0 s

0/100

10%

TBT (Total Blocking Time)

Value410 ms

67/100

30%

CLS (Cumulative Layout Shift)

Value0.221

56/100

15%

TTI (Time to Interactive)

Value24.9 s

0/100

10%

radiodays.jp

583 ms

www.radiodays.jp

1146 ms

import.css

332 ms

styles.css

334 ms

ext.css

497 ms

Our browser made a total of 126 requests to load all elements on the main page. We found that 84% of them (106 requests) were addressed to the original Radiodays.jp, 9% (11 requests) were made to Platform.twitter.com and 2% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (13.5 sec) relates to the external source Checkout.rakuten.co.jp.

Content Size

340.5 kB

After Optimization

127.0 kB

In fact, the total size of Radiodays.jp main page is 340.5 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 35% of websites need less resources to load. Javascripts take 161.5 kB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 39.0 kB

Original 48.9 kB
After minification 37.0 kB
After compression 9.9 kB

HTML content can be minified and compressed by a website’s server. The most efficient way is to compress content using GZIP which reduces data amount travelling through the network between server and browser. This page needs HTML code to be minified as it can gain 11.9 kB, which is 24% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 39.0 kB or 80% of the original size.

Image Optimization

-11%

Potential reduce by 5.5 kB

Original 48.5 kB
After minification 43.0 kB

Image size optimization can help to speed up a website loading time. The chart above shows the difference between the size before and after optimization. Obviously, Radiodays needs image optimization as it can save up to 5.5 kB or 11% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-63%

Potential reduce by 101.6 kB

Original 161.5 kB
After minification 137.9 kB
After compression 60.0 kB

It’s better to minify JavaScript in order to improve website performance. The diagram shows the current total size of all JavaScript files against the prospective JavaScript size after its minification and compression. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 101.6 kB or 63% of the original size.

CSS Optimization

-83%

Potential reduce by 67.4 kB

Original 81.6 kB
After minification 67.9 kB
After compression 14.2 kB

CSS files minification is very important to reduce a web page rendering time. The faster CSS files can load, the earlier a page can be rendered. Radiodays.jp needs all CSS files to be minified and compressed as it can save up to 67.4 kB or 83% of the original size.

Requests Now

124

After Optimization

The browser has sent 124 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Radiodays. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 20 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

High

<dl>'s do not contain only properly-ordered <dt> and <dd> groups, <script>, <template> or <div> elements.

High

Definition list items are not wrapped in <dl> elements

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

High

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

High

<input type="image"> elements do not have [alt] text

High

Form elements do not have associated labels

High

Links do not have a discernible name

These are opportunities to improve keyboard navigation in your application.

High

Heading elements are not in a sequentially-descending order

These are opportunities to improve the interpretation of your content by users in different locales.

High

<html> element does not have a [lang] attribute

Areas of Improvement

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

High

Serves images with low resolution

Low

Detected JavaScript libraries

Search Engine Optimization Advices

Format your HTML in a way that enables crawlers to better understand your app’s content.

High

Image elements do not have [alt] attributes

Language and Encoding

Language Detected

JA
Language Claimed

JA
Encoding

UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Radiodays.jp can be misinterpreted by Google and other search engines. Our service has detected that Japanese is used on the page, and it matches the claimed language. Our system also found out that Radiodays.jp main page’s claimed encoding is utf-8. Use of this encoding format is the best practice as the main page visitors from all over the world won’t have any issues with symbol transcription.

Social Sharing Optimization

radiodays.jp

Open Graph description is not detected on the main page of Radiodays. Lack of Open Graph description can be counter-productive for their social media presence, as such a description allows converting a website homepage (or other pages) into good-looking, rich and well-structured posts, when it is being shared on Facebook and other social media. For example, adding the following code snippet into HTML <head> tag will help to represent this web page correctly in social networks:

Report Summary

Performance

Accessibility

Best Practices

SEO

「声」と「語り」のダウンロードサイト | ラジオデイズ

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)

Network Requests Diagram

radiodays.jp

www.radiodays.jp

import.css

styles.css

ext.css

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

CSS Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

radiodays.jp

www.radiodays.jp

import.css

styles.css

ext.css

swfobject.js

jquery-1.3.2.min.js

init.js

bookshelf.js

base.css

header.css

common.css

module.css

parts.css

s_sb_20059.jpg

openid_login_S.gif

background.gif

logo.gif

dotLine_gray.png

description.gif

walking_bottom.gif

walking_title.gif

walking_bg.gif

arrow_gray.png

cart_bottom.png

cart.gif

loginBtn.gif

newMemberBtn.gif

gNavi_bg.png

gNavi_label.gif

search_field.png

search_btn.gif

bookshelf_bg.gif

bs_new_title.gif

arrow_circle_back_null.png

arrow_circle_next_null.png

bs_img_base.gif

bs_recommend_title.gif

bs_series_title.gif

arrow_gray.gif

mBoxA_top.png

mBoxA_bottom.png

mBoxA_titleBG.png